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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: ObjTypeParser.html 842 2015-03-07 18:20:42Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb.parse;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import com.google.common.reflect.TypeToken;<a name="line.10"></a>
<span class="sourceLineNo">011</span><a name="line.11"></a>
<span class="sourceLineNo">012</span>import java.util.regex.Matcher;<a name="line.12"></a>
<span class="sourceLineNo">013</span><a name="line.13"></a>
<span class="sourceLineNo">014</span>import org.jsimpledb.core.Database;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import org.jsimpledb.core.ObjType;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import org.jsimpledb.core.Schema;<a name="line.16"></a>
<span class="sourceLineNo">017</span>import org.jsimpledb.core.Transaction;<a name="line.17"></a>
<span class="sourceLineNo">018</span>import org.jsimpledb.core.UnknownTypeException;<a name="line.18"></a>
<span class="sourceLineNo">019</span>import org.jsimpledb.schema.NameIndex;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import org.jsimpledb.schema.SchemaObjectType;<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>/**<a name="line.22"></a>
<span class="sourceLineNo">023</span> * Parses an object type name.<a name="line.23"></a>
<span class="sourceLineNo">024</span> *<a name="line.24"></a>
<span class="sourceLineNo">025</span> * &lt;p&gt;<a name="line.25"></a>
<span class="sourceLineNo">026</span> * Syntax examples:<a name="line.26"></a>
<span class="sourceLineNo">027</span> * &lt;ul&gt;<a name="line.27"></a>
<span class="sourceLineNo">028</span> *  &lt;li&gt;&lt;code&gt;100&lt;/code&gt; - object type with schema ID 100&lt;/li&gt;<a name="line.28"></a>
<span class="sourceLineNo">029</span> *  &lt;li&gt;&lt;code&gt;Person&lt;/code&gt; - `Person' object type defined in the current schema version&lt;/li&gt;<a name="line.29"></a>
<span class="sourceLineNo">030</span> *  &lt;li&gt;&lt;code&gt;Person#12&lt;/code&gt; - `Person' object type defined in schema version 12&lt;/li&gt;<a name="line.30"></a>
<span class="sourceLineNo">031</span> * &lt;/ul&gt;<a name="line.31"></a>
<span class="sourceLineNo">032</span> */<a name="line.32"></a>
<span class="sourceLineNo">033</span>public class ObjTypeParser implements Parser&lt;ObjType&gt; {<a name="line.33"></a>
<span class="sourceLineNo">034</span><a name="line.34"></a>
<span class="sourceLineNo">035</span>    @Override<a name="line.35"></a>
<span class="sourceLineNo">036</span>    public ObjType parse(ParseSession session, ParseContext ctx, boolean complete) {<a name="line.36"></a>
<span class="sourceLineNo">037</span><a name="line.37"></a>
<span class="sourceLineNo">038</span>        // Try to parse as an integer<a name="line.38"></a>
<span class="sourceLineNo">039</span>        final Transaction tx = session.getTransaction();<a name="line.39"></a>
<span class="sourceLineNo">040</span>        final Database db = session.getDatabase();<a name="line.40"></a>
<span class="sourceLineNo">041</span>        final int startIndex = ctx.getIndex();<a name="line.41"></a>
<span class="sourceLineNo">042</span>        try {<a name="line.42"></a>
<span class="sourceLineNo">043</span>            final int storageId = db.getFieldTypeRegistry().getFieldType(TypeToken.of(Integer.TYPE)).fromParseableString(ctx);<a name="line.43"></a>
<span class="sourceLineNo">044</span>            return tx.getSchema().getObjType(storageId);<a name="line.44"></a>
<span class="sourceLineNo">045</span>        } catch (IllegalArgumentException | UnknownTypeException e) {<a name="line.45"></a>
<span class="sourceLineNo">046</span>            // ignore<a name="line.46"></a>
<span class="sourceLineNo">047</span>        }<a name="line.47"></a>
<span class="sourceLineNo">048</span>        ctx.setIndex(startIndex);<a name="line.48"></a>
<span class="sourceLineNo">049</span><a name="line.49"></a>
<span class="sourceLineNo">050</span>        // Try to parse as an object type name with optional #version suffix<a name="line.50"></a>
<span class="sourceLineNo">051</span>        final Matcher matcher;<a name="line.51"></a>
<span class="sourceLineNo">052</span>        try {<a name="line.52"></a>
<span class="sourceLineNo">053</span>            matcher = ctx.matchPrefix("(\\p{javaJavaIdentifierStart}\\p{javaJavaIdentifierPart}*)(#([0-9]+))?");<a name="line.53"></a>
<span class="sourceLineNo">054</span>        } catch (IllegalArgumentException e) {<a name="line.54"></a>
<span class="sourceLineNo">055</span>            throw new ParseException(ctx, "invalid object type").addCompletions(session.getNameIndex().getSchemaObjectTypeNames());<a name="line.55"></a>
<span class="sourceLineNo">056</span>        }<a name="line.56"></a>
<span class="sourceLineNo">057</span>        final String typeName = matcher.group(1);<a name="line.57"></a>
<span class="sourceLineNo">058</span>        final String versionString = matcher.group(3);<a name="line.58"></a>
<span class="sourceLineNo">059</span><a name="line.59"></a>
<span class="sourceLineNo">060</span>        // Get specified schema version and corresponding name index<a name="line.60"></a>
<span class="sourceLineNo">061</span>        final Schema schema;<a name="line.61"></a>
<span class="sourceLineNo">062</span>        final NameIndex nameIndex;<a name="line.62"></a>
<span class="sourceLineNo">063</span>        if (versionString != null) {<a name="line.63"></a>
<span class="sourceLineNo">064</span>            try {<a name="line.64"></a>
<span class="sourceLineNo">065</span>                schema = tx.getSchemas().getVersion(Integer.parseInt(versionString));<a name="line.65"></a>
<span class="sourceLineNo">066</span>            } catch (IllegalArgumentException e) {<a name="line.66"></a>
<span class="sourceLineNo">067</span>                ctx.setIndex(startIndex);<a name="line.67"></a>
<span class="sourceLineNo">068</span>                throw new ParseException(ctx, "invalid object type schema version `" + versionString + "'");<a name="line.68"></a>
<span class="sourceLineNo">069</span>            }<a name="line.69"></a>
<span class="sourceLineNo">070</span>            nameIndex = new NameIndex(schema.getSchemaModel());<a name="line.70"></a>
<span class="sourceLineNo">071</span>        } else {<a name="line.71"></a>
<span class="sourceLineNo">072</span>            schema = tx.getSchema();<a name="line.72"></a>
<span class="sourceLineNo">073</span>            nameIndex = session.getNameIndex();<a name="line.73"></a>
<span class="sourceLineNo">074</span>        }<a name="line.74"></a>
<span class="sourceLineNo">075</span><a name="line.75"></a>
<span class="sourceLineNo">076</span>        // Find type by name<a name="line.76"></a>
<span class="sourceLineNo">077</span>        final SchemaObjectType schemaObjectType = nameIndex.getSchemaObjectType(typeName);<a name="line.77"></a>
<span class="sourceLineNo">078</span>        if (schemaObjectType == null) {<a name="line.78"></a>
<span class="sourceLineNo">079</span>            throw new ParseException(ctx, "unknown object type `" + typeName + "'")<a name="line.79"></a>
<span class="sourceLineNo">080</span>               .addCompletions(ParseUtil.complete(nameIndex.getSchemaObjectTypeNames(), typeName));<a name="line.80"></a>
<span class="sourceLineNo">081</span>        }<a name="line.81"></a>
<span class="sourceLineNo">082</span>        return schema.getObjType(schemaObjectType.getStorageId());<a name="line.82"></a>
<span class="sourceLineNo">083</span>    }<a name="line.83"></a>
<span class="sourceLineNo">084</span>}<a name="line.84"></a>
<span class="sourceLineNo">085</span><a name="line.85"></a>




























































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